News of the World reports Justin Timberlake has ended his romance with Cameron Diaz and appears to have already rebounded with his ‘What Goes Around’ music video recruit, Scarlett Johansson. “Justin decided to end it just days before new year,” a source told the tab. “It seems he wanted a fresh start for 2007. They spent Christmas together in Colorado, you would have never known what was around the corner. Justin did love Cameron but things don’t always work out the way you want them.” And earlier this week, the former *NSYNC star met up with Johansson at Social Hollywood following the premiere of ‘Alpha Dog’. “When she met Justin they looked very close and chatted away for ages,” a witness explained. “There were other people trying to speak to Justin but he kept his attention on her for around an hour. They looked very intimate. But he’s still trying to make it look low key—because he left with his mum Lynn later through a back exit.”